155results about How to "Reliable transmission" patented technology

The invention discloses a wireless network data reliability transmission system, which is used in the technical field of data transmission and comprises a slave gateway deployment and data aggregation module. A scheduling protocol and priority management module; a hierarchical caching and breakpoint resuming module; and a trend prediction optimization decision module. According to the invention, in combination with priority-based scheduling, link quality evaluation, data caching and retransmission mechanisms, reliable transmission of data with different priorities in a wireless network can be ensured, and normal transmission can be recovered through an efficient data recovery mechanism when the network is unstable; through real-time environment state estimation and prediction, communication parameters and resource scheduling can be dynamically optimized, network performance is effectively improved, and communication delay is reduced. The hidden state of a communication environment is estimated in real time through comprehensive analysis of link quality, event records and cache state data, future hidden state changes are predicted through a time sequence convolutional network, and potential performance degradation risks are recognized in advance.

The present invention relates to a Braking device (10) for braking a shaft (12) of an escalator, the braking device comprising a brake disc (14), designed for rotationally fixed attachment to the shaft (12) of the escalator, the brake disc (14) having at least one braking surface (15) with a respective main extension plane (E); at least one friction element (18) pivotally mounted perpendicular to the main extension plane (E) for frictionally applying a braking force to the at least one braking surface (15); and an actuating means (26) for spacing the at least one friction element (18) from the at least one braking surface (15) and / or applying the at least one friction element (18) to the at least one braking surface (15). Furthermore, the present invention relates to an escalator comprising a braking device (10) acting on a shaft (12) of the escalator.

The application relates to the field of mobile communication, and discloses a method and device for monitoring data packet disorder in a mobile network, a computer readable medium and an electronic device. The method is executed by a first user plane node in a user plane, and comprises the following steps: when the first user plane node receives a disorder statistics request sent by a target network element in a control plane, sending a notification message containing a differentiated service code point to a second user plane node in the user plane; receiving a plurality of echo messages sent by the second user plane node in sequence, wherein the echo messages comprise a message sequence number and the differentiated service code point; determining a disorder monitoring result according to the message sequence number in each received echo message and the normal order of the message sequence numbers in the plurality of echo messages; and reporting the disorder monitoring result to the control plane, so that the control plane determines the disorder condition of the data packet according to the disorder monitoring result. The method can realize monitoring of the disorder condition of the data packet, and provide data support for reliable transmission of the mobile network.

This invention discloses a foreign matter collection device and method for overflow-type down-drawing substrate glass furnaces, belonging to the field of flat glass manufacturing technology. The device provided by this invention includes a fixed tube, a collection tube, and a rotary drive mechanism. The collection tube is hinged to the inner end of the fixed tube within the furnace and consists of two symmetrical U-shaped grooves connected by a central rotating hinge shaft. The rotary drive mechanism drives the collection tube to rotate, so that when the central rotating hinge shaft faces downwards, the two grooves automatically open under gravity to form a U-shaped receiving groove, and when facing upwards, they automatically close to form a sealed circular tube. Using this invention, the process of removing foreign matter from the furnace for cleaning can avoid secondary pollution or safety accidents caused by scattering. The entire switching process is completed online outside the furnace without interrupting production or opening the furnace, completely solving the problems of large production losses and severe disturbances to the furnace temperature and airflow fields caused by the need to stop production for cleaning in traditional devices.

This invention belongs to the field of substation automation technology, and relates to a networking system and method for a 750kV substation secondary system. The system includes station control layer equipment, bay layer equipment, and process layer equipment. Bay layer equipment and process layer equipment communicate directly point-to-point via dedicated optical fiber, without the need for a process layer switch. Station control layer equipment and bay layer equipment are connected via a station control layer network. The station control layer network includes physically independent or logically isolated A, B, and C networks. Network A connects a dual-configuration A-set of protection and a dual-configuration A-set of safety automatic devices. Network B connects a dual-configuration B-set of protection and a dual-configuration B-set of safety automatic devices. Network C connects station control layer monitoring equipment, single-configuration protection devices, single-configuration measurement and control devices, and single-configuration safety automatic devices. This invention achieves deterministic communication delay and limits the impact of faults to a single bay.

This invention provides a remote smart lock control method based on a cloud platform, relating to the field of artificial intelligence technology. The method includes: the cloud platform sending a sound wave signal transmission command to the target smart lock, triggering the smart lock to send multi-band sound wave signals to preset auxiliary signal enhancement device deployment locations A and B; the cloud platform receiving sound wave feedback signals from locations A and B, calculating the final communication path based on signal propagation delay, frequency band interference intensity, and attenuation parameters, combined with real-time signal quality indicators reported by the remote communication module; and dynamically encrypting the command and sending it to the remote communication module through the final communication path. This invention dynamically calculates the optimal transmission path, breaking through the limitations of traditional single-channel transmission. Even in complex electromagnetic environments or obstacle-blocked scenarios, it can still ensure reliable transmission of control commands and reduce communication interruption rates.

A battery thermal runaway multi-stage early warning device and its control method belong to the technical field of lithium ion power battery safety monitoring. In the device, the capacitor displacement sensor adopts a parallel plate capacitor structure to monitor the deformation of the battery cell; the three-layer step temperature sensor is composed of three layers of temperature changing materials arranged in concentric circles, independently outputs step signals of three temperature nodes of 85 DEG C, 135 DEG C and 200 DEG C, and realizes the internal temperature monitoring of the battery; the pressure sensor of the pressure relief valve film monitors the pressure change at the battery pressure relief valve. After the signals of various sensors are collected and processed, they are input into the logic judgment unit, combined with the multi-signal composite judgment to output the three-stage early warning signal, and then driven by the isolation driving unit to drive the corresponding LED indication. The valve adopts triple sensing fusion and pure hardware logic hierarchical judgment, realizes accurate early warning of early, middle and late thermal runaway, has fast response speed, high reliability, compact structure and is suitable for various batteries, and can effectively improve the safety of battery use.

The utility model provides a polishing derusting device for a pipeline bell and spigot, which comprises a mounting bracket fixedly mounted on a working platform, a rotating plate rotatably connected to the top of the mounting bracket through a rotating shaft, a driving component arranged on the mounting bracket and used for driving the rotating shaft to rotate, and two groups of first telescopic mechanisms oppositely and fixedly mounted on two sides of the rotating plate, and polishing equipment capable of making contact with the end face, to be polished and derusted, of the pipeline bell and spigot end is fixedly mounted at the ends, away from the rotating plate, of the two first telescopic mechanisms. According to the polishing and derusting device for the pipeline bell and spigot, polishing and derusting operation can be conducted when a pipeline is hoisted on the operation platform, manual polishing of the pipeline bell and spigot is not needed, the labor cost and time are saved, the polishing and derusting efficiency of the pipeline bell and spigot is improved, and the polishing and derusting efficiency of the pipeline bell and spigot is improved. And meanwhile, the pipeline bell and spigot joints with different pipe diameters can be polished and derusted, so that the universality of the device is improved.

The embodiment of the invention provides a cross-forward isolation data comparison system, method and device, a medium and a product, and relates to the field of data synchronization and verification. The system comprises a first agent which is deployed in an intranet and accesses a source end database through a database connection protocol; the second agent is deployed in an external network and establishes one-way communication connection with the first agent; the first agent is also used for transmitting the source end data of the source end database to the second agent through the forward isolation device through the one-way communication connection; and the comparison service is deployed in an external network, pulls the source end data from the interface of the second agent, and performs comparison operation on the source end data and the target end data. According to the method provided by the invention, the technical problem of data comparison in a cross-forward isolation scene is solved through the design of a double-agent architecture and a user-defined protocol, the security and reliability of data comparison are realized, and efficient and secure data comparison in a strict network isolation environment is realized.

According to the single-cell-oriented energy storage big data reliable transmission method and device and the storage medium provided by the embodiment of the invention, firstly, differentiated reliability levels are allocated according to the content type of a data packet, and are positively associated with coding redundancy; furthermore, the coding strategy can be dynamically optimized along with the network state by acquiring the link quality parameter in real time and positively associating the channel deterioration degree with the coding redundancy; and finally, after the acknowledgement feedback is received, selective retransmission is triggered only for the data blocks which are not successfully delivered. According to the invention, accurate retransmission control is realized, unnecessary retransmission data volume is effectively reduced, the probability of transmission delay and channel conflict is reduced, the method is especially suitable for a narrowband link or a high packet loss environment, and data delivery timeliness and link utilization efficiency are improved.

The invention discloses an efficient concurrent transmission method and device for cell data and a storage medium, and relates to the technical field of lithium batteries. The method comprises the following steps: acquiring inherent identity identification information and a factory performance parameter set of a lithium cell; performing correlation analysis and entropy evaluation on the performance parameter set, and dynamically selecting a differential compression strategy for compression according to the correlation analysis and entropy evaluation; performing lightweight encryption on the compressed data and the identity identification information to generate a data block with physical meaning; writing the data block into a special storage chip embedded in the lithium cell body; after an external access request is received, the current key state parameter of the battery cell is read from the special storage chip, and safety state evaluation and authority verification are carried out in combination with the current key state parameter and a certificate attached to the access request; and selectively activating the decryption of the corresponding ciphertext segment in the data block and the decompression reconstruction process based on the parameter correlation model according to the permission level passing the verification. And deep binding and credible traceability of the data and the physical entity are realized.

The present application relates to the technical field of network security, and discloses a hidden channel processing method and device based on a federated learning gradient vector, which is used for realizing controllable construction and accurate blocking of a gradient hidden channel under the premise of guaranteeing the convergence performance of a federated learning model.The hidden channel processing method based on the federated learning gradient vector comprises the following steps: obtaining an original gradient vector of a current round of federated learning, calculating, for each dimension, a first sensitivity index reflecting the influence degree of model performance and a second sensitivity index reflecting the inherent noise level; determining the processing strength of each dimension according to the two indexes, including the signal modulation strength for constructing the hidden channel and the interference strength for blocking the hidden channel; when it is necessary to transmit hidden information, modulating the gradient value according to the signal modulation strength and then uploading the server; when it is necessary to block the hidden channel, adding noise according to the interference strength and then uploading the server or directly used for aggregation.

This invention discloses an automated settlement system for cross-regional power trading based on smart contracts. A feature recording module records multi-dimensional settlement characteristics of settlement data packets from power generation companies. A data preparation module, responding to the power generation company's need to send settlement data packets, generates a sending request based on the multi-dimensional settlement characteristics. A sending module processes the settlement data packets based on the sending request, encapsulating the access sequence number and key segment sequence number for synchronous transmission. A verification module verifies the settlement data packets, and the verified data packets are used to generate a trading contract through a contract trading module. Based on the trading contract, a transaction fund transfer instruction is generated. This invention automates the entire power trading settlement process, reconstructs the trust system for power trading settlement, and lays a solid foundation for building a new generation of transparent, intelligent, and efficient power market operation ecosystem.

The invention relates to a renewable energy local consumption method based on an isolated micro-grid, and the method comprises the steps: constructing a layered distributed cooperative control architecture for the micro-grid, enabling a local control layer to collect the operation environment parameters and performance parameters of power generation equipment and energy storage equipment in real time, and enabling a central control layer to carry out the multi-time-scale energy optimization configuration according to the real-time equipment parameters; the real-time power of the micro-grid is balanced by responding to instantaneous changes of renewable energy sources and loads in an ultra-short-term optimization manner; an energy distribution plan of the next day is formulated through short-term optimization; power generation equipment and energy storage configuration are optimized in a medium-and-long term manner, and then global optimization decision making is performed to obtain an energy scheduling plan among the regions; and the regional coordination layer performs cooperative control on equipment in the region based on the energy scheduling instruction. Compared with the prior art, the method has the advantages that the special environment and technical problems of high-cold and high-altitude areas are solved, the local consumption efficiency of renewable energy in the isolated micro-grid is remarkably improved, the wind curtailment rate and the light curtailment rate are reduced, and the stability and the reliability of the micro-grid system are enhanced.

The utility model relates to a kind of lifting material pouring machine, belong to food transport device field, including outer frame, material pouring and turning over subassembly, material box and transmission component, material pouring and turning over subassembly is cooperatively installed in outer frame inside, material box is carried on material pouring and turning over subassembly, transmission component is equipped with in outer frame top and frame edge, transmission component is cooperatively installed with material pouring and turning over subassembly;Lifting and overturning material pouring are realized by single motor, reduce energy consumption, also ensure the stability of lifting and overturning material pouring, and lifting and overturning material pouring are synchronously carried out by chain, guide rail and lifting track, overall structure is simple, solve the problem of unable to simultaneously lift and overturn material pouring, and improve production efficiency, reduce labor cost.

The application discloses a design and a method of an intelligent opening and closing type temperature control heat dissipation device, and belongs to the technical field of heat dissipation equipment. The heat dissipation device innovatively combines the shape memory effect and superelasticity of a nickel-titanium high-temperature alloy, simulates the folding and unfolding principle of a folding fan, realizes automatic adjustment of the opening and closing state of the fan blade with temperature change, and further accurately adjusts and controls the heat dissipation capacity. In a low-temperature environment, the fan blade remains closed, reducing unnecessary heat loss; in a high-temperature environment, the fan blade is automatically opened, the heat dissipation effect is strengthened, and it is ensured that the equipment always stably operates in a suitable temperature range, and the heat dissipation device has the remarkable advantages of ingenious structure, accurate temperature control, energy saving and high efficiency.

The utility model relates to large -scale steel structure welding mobile type operation platform, including support base, operation platform, ladder structure and lifting assembly, the lifting assembly includes cross bar and control assembly, wherein: Cross bar installs on support base, Control assembly rotationally sets up on cross bar, and bottom can extend downward to make universal wheel from ground, Control assembly includes pivot, support leg and spacing cylinder, wherein: Pivot passes through cross bar and is connected with rotation, Support leg is with pivot's bottom screw joint, Spacing cylinder installs on cross bar, and spacing cylinder and support leg sliding connection, the utility model discloses through the control of lifting assembly, can make universal wheel from ground when operating, will platform fixed in the operation position, promotes the operation security, after the operation, can make universal wheel ground, the platform moves conveniently, realized the flexible switching of mobile and fixed function, improved the use convenience of platform.

The application provides a delay optimization system and method based on unmanned aerial vehicle-truck joint emergency communication. The system comprises a coupling modeling module, a scenario generation module, a two-stage robust optimization module and a solving module. The method uses the coupling modeling module to construct a power distribution network fault model, an air-ground mobile communication network model and a communication delay model, uses the scenario generation module to generate a typical scenario set of wind and light output uncertainty, uses the two-stage robust optimization module to establish an optimization model with the minimum whole-cycle communication delay as the target, optimizes node deployment and link pre-configuration in the pre-disaster stage, dynamically schedules truck and unmanned aerial vehicle cooperative communication in the disaster stage, and uses the solving module to decompose and solve the deployment and scheduling scheme. The application couples power failure and communication delay, constructs an air-ground integrated emergency communication network and adopts two-stage robust optimization, thereby reducing end-to-end communication delay under extreme weather, which helps to improve the real-time performance and resilience of power distribution network emergency communication.

The invention relates to the technical field of intelligent processing of campus operation and maintenance work orders, and discloses an intelligent analysis and service optimization system for campus informatization maintenance work orders. According to the system, standardization processing of multi-source work order data is achieved through a work order information aggregation module; the intelligent priority evaluation module adopts a deep learning model to analyze fault text semantics, generates a dynamic priority coefficient and improves the accuracy of work order grading; the resource scheduling optimization module generates an optimal allocation scheme based on the priority and the personnel state; and the redundant communication management module constructs an active-active architecture by using a software defined network, so that load balancing and rapid fault switching of a data stream and a control signaling are realized, and the communication reliability of the system is effectively guaranteed. According to the invention, the problems of inaccurate priority judgment and insufficient communication guarantee of a traditional work order system are solved.

This invention relates to a method for fault communication and handling in an in-vehicle network using automotive Ethernet, wherein the in-vehicle network includes multiple network nodes interconnected in a network structure. The method includes the following steps: detecting a critical event at one of the network nodes of the in-vehicle network, wherein the critical event is detected by a network node affected by the critical event or by a network node connected to the network node affected by the critical event; generating a critical event message at the physical layer and / or data link layer of the network node that detected the critical event; broadcasting the critical event message to multiple network nodes of the in-vehicle network; and receiving and processing the critical event message at the physical layer and / or data link layer of the automotive Ethernet at other network nodes of the in-vehicle network.

The embodiment of the invention provides a data processing method and device, a storage medium and electronic equipment, and relates to the technical field of computers, and the method comprises the steps that a transmitting end obtains first I2S audio data, carries out the inter-frame splitting of the first I2S audio data, and obtains at least one first I2S data frame; encoding each first I2S data frame by using a Hamming code encoder to obtain an encoded second I2S data frame; the Hamming code encoder is used for encoding 4-bit data code words into 7-bit data code words, and data encoded by the Hamming code encoder is used for supporting error detection and error correction of the data; performing recombination according to the encoded second I2S data frame to obtain second I2S audio data; and sending the second I2S audio data to a receiving end based on an I2S protocol. Therefore, by grouping the frames and adopting (7, 4) Hamming codes for coding, the error correction capability is improved under the condition of increasing the minimum error correction bits, the reliable transmission of the I2S audio data is realized, and the hardware complexity is reduced.

The invention relates to a single-wire communication method, a communication system, a readable storage medium and a program product, and the method comprises the steps: receiving a target carrier clock signal transmitted through a serial communication channel for an nth slave device; the target carrier clock signal is a carrier clock signal which is sent by the master device, carries an original carrier clock signal of target communication data, and is obtained after the original carrier clock signal is subjected to phase reversal processing of part or all of the first (n-1) slave devices; and decoding the target communication data from the target carrier clock signal by identifying the carrier level duration of the effective carrier level in the target carrier clock signal. In the transmission process of the carrier clock signal along the serial communication channel, the carrier clock signal is subjected to selective phase reversal processing by the slave device on the communication link, so that the problems of duty ratio distortion and signal attenuation caused by long-distance transmission can be effectively avoided, the accuracy and reliability of communication data transmission are guaranteed, and the transmission efficiency is improved. And the expandability of the communication system can be effectively improved.

This utility model relates to the field of switch operation technology, and discloses a switch transmission structure. The transmission structure includes: a cover located on the back side of the switch, with an operating mechanism disposed on the back side of the switch; and a transmission component rotatably mounted on the cover, comprising a U-plate one and a U-plate two connected to form a frame structure; wherein, the U-plate two has a straight groove, which is connected to the operating mechanism for transmission. This utility model's switch transmission structure, in which the rotating transmission component controls the rotation of the switch's operating handle, drives the switch to open and close, is suitable for switches installed in reverse within cabinets, saving cabinet space, facilitating simple installation, and providing stable switch operation. The switch transmission structure facilitates reliable switch transmission, and during switch control, the transmission process is simple, operation is sensitive and convenient, and the cost is low, making it suitable for use in cabinet-mounted products in this field.

This application provides a network link capacity management method, apparatus, device, and medium, relating to the field of computer technology. The method includes: collecting link traffic of a network link; statistically analyzing the bandwidth utilization of the network link within a first period based on the link traffic and the link bandwidth of the network link, obtaining a first statistical bandwidth utilization rate corresponding to the first period, wherein the first period includes multiple service time periods; comparing the first statistical bandwidth utilization rate with a capacity expansion threshold; and if the first statistical bandwidth utilization rate is greater than the capacity expansion threshold, then expanding the link bandwidth of the network link. Thus, by using the statistical bandwidth utilization rate of the network link within a time period containing multiple service time periods as an evaluation indicator for whether network link capacity expansion is needed, the accuracy of capacity expansion judgment is improved, achieving economical and reliable management of network link capacity.

The utility model relates to the technical field of edge banding machines, in particular to an edge banding belt conveying device which comprises a belt conveying platform, and a belt conveying guide groove is formed in the belt conveying platform. A feeding guide assembly, an anti-returning conveying assembly, a converging opening guide assembly, a driving belt conveying assembly and a belt cutting device are sequentially arranged on the belt conveying platform in the belt conveying direction of the belt conveying guide groove, and an edge sealing belt enters the anti-returning conveying assembly through the feeding guide assembly; the anti-return conveying assembly is used for driving the edge sealing belt to be conveyed forwards in one direction along the belt conveying guide groove into the converging opening guide assembly, the converging opening guide assembly is used for guiding and conveying the edge sealing belt into the driving belt conveying assembly, the driving belt conveying assembly is used for conveying the edge sealing belt into the belt cutting device, and the belt cutting device is used for cutting the edge sealing belt. The edge sealing belt conveying device is novel in structure, stable and reliable conveying of edge sealing belts is achieved, non-return conveying of the edge sealing belts is achieved, and the edge sealing belt conveying device is suitable for conveying of edge sealing belts of multiple specifications and high in flexibility.

This utility model discloses a double-pulley device for a stair climber, relating to the field of fitness equipment and applied to a stair climber. It includes a dual-pulley resistance source with a first drive wheel and a second drive wheel; a first pulley assembly including a first pulley and a first belt, the first belt coupling the first drive wheel to a drive shaft; and a second pulley assembly including a second pulley and a second belt, the second belt coupling the second drive wheel to a drive shaft. The first pulley assembly is configured for high-friction transmission; the second pulley assembly is configured for low-friction transmission, with its friction being less than that of the first pulley assembly. This allows it to provide a buffering damping force to the drive shaft by slipping when the first belt fails. During normal operation, the device operates automatically. However, when the first belt slips off or fails, the friction between the second pulley and the second belt provides sufficient damping force to slow the descent of the stair treads, thus providing a buffering and protective function.

The invention relates to an offshore underground high-frequency wireless communication device which comprises a transmitting unit and a receiving unit. The transmitting unit comprises a transmitting master control module, a transmitting circuit and a transmitting coil; the receiving unit comprises a receiving coil, a receiving circuit and a receiving main control module; the emission master control module controls the emission circuit to start and stop according to needs and outputs a coded modulation signal; the transmitting circuit carries out push-pull driving and resonance processing on the coded modulation signal and then loads the coded modulation signal to a transmitting coil to generate an alternating magnetic field; the receiving coil induces a signal of the alternating magnetic field and outputs an induction signal; the receiving circuit amplifies, filters and shapes the induction signal and then outputs a sampling signal; and the receiving master control module demodulates and processes the sampling signal to obtain a wireless receiving signal. The problem that data transmission between two short sections can be achieved only through traditional integrated manufacturing or mutual communication is solved, the problem that the working endurance time of an underground circuit is short under the battery power supply condition can also be solved, and reliable transmission of underground data is guaranteed.

This invention discloses a fertilizer coating device, belonging to the field of fertilizer coating technology. It includes a fluidizing chamber with a discharge port at the bottom, providing a coating area; a discharge chamber located at the bottom of the fluidizing chamber, with at least a portion of the fluidizing chamber located inside the discharge chamber; and a spraying element rotatably disposed inside the discharge chamber, comprising a conical surface; a first spray groove on the conical surface; and a second spray groove on the radial outer wall of the spraying element. When the conical surface blocks the discharge port, the spraying element sprays gas into the bottom of the fluidizing chamber through the first spray groove and into the side walls of the fluidizing chamber through the second spray groove. This invention utilizes a double-groove spraying element with a circulating airflow path to construct a three-dimensional fluidization field, combined with multi-nozzle atomization spraying at the top, resulting in uniform coating thickness and no missed spraying. The conical surface also functions as a sealing and guiding element. Precise cylinder lifting and positioning, reliable gear transmission, and a combination of rail groove fitting and elastic sealing structure ensure smooth, uninterrupted movement.

The invention discloses a method and device for sending buried point data of terminal equipment, a storage medium and a computer program product, and relates to the field of computers.The method comprises the steps that under the condition that it is determined that the terminal equipment triggers a buried point code, buried point data corresponding to a target service event is generated through the buried point code, the burying point data is used for indicating service event information generated when the terminal equipment executes the target service event; storing the burying point data into a cache queue; and sending the buried point data in the cache queue to a back-end server according to a preset sending strategy so as to indicate the back-end server to analyze a service operation path of the target service event according to the buried point data.

The application provides a high-efficiency vertical lifting type stirring mixer and a use method, relates to the field of stirring mixing equipment, and comprises a U-shaped base. Two sides of the top of the U-shaped base are respectively fixed with a rack column and a sliding rail column. The top of the rack column and the sliding rail column is fixed with a top frame. The head of the top frame is rotatably installed with a stirring main shaft through a bearing seat. The top end of the stirring main shaft is connected with a stirring power device. The bottom end of the stirring main shaft is installed with a three-arm stirring frame. The three-arm stirring frame is installed with a stirring paddle assembly for stirring. The sliding rail column is slidably installed with a lifting support. The lifting support and the U-shaped base are installed with a lifting power device. The lifting support is used for positioning and placing a stirring cylinder. The stirring cylinder is located directly below the stirring paddle assembly. The mixer can be used for stirring concrete raw materials in the process of small-batch concrete test block production. Automatic stirring paddles are adopted to realize sufficient stirring of the concrete.